I am trying to locate companies who will locate property in spain for
us to view providing they follow the property briefing that I provide
for them.What should I put into the search engine.These are more than
estate agents.They will have done the searching for us.

Hi preacher150, and "Happy New Year!"
  
Using the terms [ "locate properties" + spain ], I fished these out of Google:
  
   
"We can help because we will find the perfect property for you.
Tell us what you are looking for and how much you wish to spend and we
will do the rest. And there is no charge to you as we receive our fees
from the seller.
Unlike conventional real estate agencies, we will not offer you
unsuitable properties or waste your time. Instead, we use our
extensive contacts along the Costa del Sol to pinpoint your ideal
apartment, house, villa, finca, land or investment property."
http://www.idealhomesinspain.com/Main/main.html
   
"Fuengirola has many business properties for sale or lease. Use our
enquiry form to find out what and where they are. We are leaders in
real estate in this part of Spain and can conduct extensive searches,
including of the databases of almost all real estate agents on the
Costa del Sol, Spain."
http://www.costa-del-sol.cc/htdocs/costa-del-sol/area-guides/fuengirola/property--spain-real-estate.htm
   
"Below is a selection of a few of the thousands of available
properties we have to offer. As we personally locate properties for
your specific requirements, please complete the form below and we will
send out details of property relevant to your personal requirements."
http://www.selectpropertiesspain.co.uk/propertysearch.asp
  
  
You might want to try similar searches. Here are some examples that may help:
[ "locate a property" spain ]
[ "property locators" spain ]
[ specialise OR specialize property location spain]
[ "personally locate properties" spain ]
[ "we will find" property spain ]
[ "we will do the searching" spain ]

    
I hope that helps!

What a perfect answer and very quick.Many thanks